Signaling device



W. SPARKS ET AL SIGNALING DEVICE Jan. l5, 1929. v 1,698,804

Filed Dec. 21, 1926 2 eets-Sheet 1 Jan. 15, 1929.

SIGNALI NG DEVICE Filed DBO. 21, 1926 2 Sheets-Sheet 2 l a :b3

Z7 52 .az x/ 25 24 0 f5 ,29 se,

@mi j NVENTOR @im faQ/fi? L, l l

NEYS.

. vliatente'cl Jan. 15, 1929..A

.- 1 UNITED STATES PATENT OFI-"lcs,

" WILLIAM sraaxs, 'rnnononn JOHNSON scorIELn, rami w. BILLIG, Nn LLOYD n JOHNSON', 0l' JACKSON, MICHIGAN, ASSIGNORS TO THE srAnxs-wrrnme'ron oon- 'Pm, OI JACKSON, MICHIGAN, A CORPORATION OF OHIO.

sIeNALm-e DEVICE. I

Application led December 21, 1926. Serial 15in. 158,132.

This invention relates tov certain new and useful improvements in signaling devices. i

The main object of the invention isthe production of a novel signaling device par- 5 ticularly designed for use onl automobiles,

motor boats and the like, and capable of pro.- ducing a comparatively loud signal that will y carry long distances, and is of a musical tone or a combination of musical jtones preferably ofv a harmonious character.

' More detailed objects relate to the simplic- 'ity and strength of the structure and the detailed form, arrangement and association of the parts thereof, all as will more fullyappear from the following description taken in connection with the accompanying drawin which: v

in d sigure 1 is an elevation of a signaling device of this invention.

Figure 2 is a section on line 2 2, Figure l1.

The rear end ofthe armature shaft may be mounted in adjustable bearing '5- carried by the end or cross-wall 6+ of a U-shaped motor ease -7, the ends of whichare connected to the flanges -'--18 and -9-' respective] formed upon the front wall 2-. The? usual amature `-10-, vpole pieces -11- and field coils -12--are provided. K

The actual structure of the 'motor may ,vary widely as it constitutes a preferred driving means for the rotor .13- of a ro tary compressor, and for this purpose the end wall or head -2 is formed with a circular chamber or cylinder leccentric with respect to the armature shaft -'4- and to the rotor shaft l5- which is aligned with the armature shaft 4 and may, as shown, have a threaded relation wlth the rotor 13 and its rear end is formed withl a tongue adapted-to lie within the boss -3- lfor interlocking engagement with the forward end of the amature shaft which is4 formed with a groove for receiving the tongue -16-, thereby permitting some relative movement of the armature and rotor or recesses in the rotor, spaced equal distances apart shafts wit-hout interfering with .the connection. The armatureand rotor shafts are in effect a sectional armature shaft and may be so considered.

The end head -2- is further formed with an air-storage chamber -17-, in this instance concentric with the cylindrical chamber .-14- and extending around the cylindrical chamber throughout more than half 1t circumference` and in communication with the cylindrical chamber through port -18- in the wall of said chamber, and through` which port air under pressure 1s ejected by the rotor -13- from'the chamber -14-.

.For effecting this result, the rotor includes one or more, in this instance three movable blades -19- slidably mounted in grooves and preferably and adapted to be lthrown out-by centrifugal force as the rotor-13- is driven by the armature shaft The compressor chamber -14 is formed with an air inlet provided by the tube -20- which penetrates the wall of the chamber i3- extends across the chamber 17- and penetrates the external wall of the cham.

ber 1T- The inlet-20* is at the low pressure side of the rota compressor and the outlet 18- at the high preure side.

When the rotor is set in motion by rotation of the armature shaft the air compressed inv the chamber I4-'- escapes through outlet -18- into the storage cha-mber -17- and thence into the air-conveying A plurality of air resonant devices 22- are connected to the air-conveying tube 2l-Q such horn or air resonant are shown andadapted to produce musical ltones or notes of varying pitch. 'Ihese yair reso. nant structures each comprise a 25- threaded together at their edges to form an. enclosed chamber. The portionl Q4-is substantially' cup-shape and internallv threaded and formed at the central portion of its bottom wall with a tubular boss or nipple externally threaded and adapted to be screwed into an internally threaded opening in the forward wall of the air-conveying tube -21-.A

The other portion -26- is formed with a In this particular illustration two.

circumferential flange -27- externally threaded and screwed into the open end of the cup-shaped member -24 The forward member '26-g is connected to the projector 28 in any suitable manner, and is formed with a circular flange -30- axially aligned with both the projector -28- and the nipple Q5- and projecting rearwardly into the chamber within the casing -23-.

The rear face of the flange 2`7` is pref/- erably formed with an outwardly and forwardly inclined portion constituting `a groove 3l-f and on the inclined bottom wall of which the outer edge of a thin disk T36- of suitable material, such as metal,

, is adapted to be confined by the forwardly and outwardly inclined front face B2- on the outer edge of a plate --34 In this particular illustration, the upper casing --23A is somewhat larger than `the lower casing and the plate -34. in both instances is formed with a plurality'of openings which, as shown, are concentrically arranged near the outer edge of the plate to permit the passage of air through the plate to the ,thin disk `36 which is also formed `with openings or perforations.

. The disk --36. arranged in the upper Aand larger casing 23- is formed with three openings concentrically arranged near thev outer edge of thediskand outside the circular flange -30-, whereas the disky 36- in the lower casing has its edge formed with grooves or recesses nwhich permits the Apassage of air from tube 2lto the' portion of the chamber within casing -23- forward of the disk -36-.

The two projectors --28-v should be made to suit the respective air `supplying mechanisms to produce the desired tone, and are as shown, of dilferentl length, the longer one being connected with the smaller casing -23-. These projectors extend substantially parallel with the 'axis of the motor and overlie the motor, thereby producing a compact device. A bracket -90- may be attached tothe compressor casing for supporting the horn, or any other suitable means mayA be utilized,

`Thehedge of flexible disk -36- is confined upony an outwardly and forwardly inclined surface, and the disk *36- and plate 34- are both clamped between the two sections of casing -23-, with the result that the central portion of the disk -36- tends to bow rearwardly away from the opening in the flange .-30-- leading to the projector 28-.

The sound-producing faculty of the resonant devices results from tle alternate opening and closing of the conduit within the flange 3G- which extends rearwardly from the projector -28- by movement of the disk -36.

It will be apparent that the kstructure is contacted thereby when the diaphragm is 139' 'unusual carrying power, fand is highly eficient for use in connection with I moving vehicles, and altho I have shown and ydescribed a specific structure as illustrative of 1 a perhaps preferred embodiment of the invention, I donot desireto restrict myself to the details of the structure or the parts thereof, as various changes and modica- 'tions may be'made withinthe scope of the appended claims.

I claim:

1. A horn comprising a fluid compressor includin a rotor chamber and a'rotor arranged t erein, a storage chamber partially encircling the rotor chamber and in communicationsolely with the high pressure side of the compressor, an lair resonant device in communication with the storage chamber, and a tube penetrating the exterior wall of the storage chamber and the wall of the rotor chamber on the low pressure side of the compressor.-

2.A horn comprising a rotary motor, a compressor and` a plurality of air resonant devices'extending substantially parallel with the axis of the motor.

3. Ahorn comprising a rotary motor, a compressor and a plurality of air resonant devicesV extending rsubstantially parallel.

with the axis of the motor and rearwardly compressor. l

4. A horn comprising a rotary motor, a compressor and an air resonant device extending substantially parallel with the axis of the motor and overlying the motor.

lili) 5. A signaling device comprising a motor, I

a fluid compressor including a compressor chamber and a rotor therein driven by dthe motor, a storage vchamber in communication withthe compressor chamber, a diaphragm chamber, means` of communication between the storagel chamber and the diaphragm chamber, a tube extending into the diaphragm chamber, and a vibratory disk extending across the openA end of the tube and having openings therethrough out of registration with the tube.

6. horn comprising a rotary motor, a

compressor and an air resonant device comprising amdiaphr'agm chamber, a plate in thediaphragm chamber, a plurality of apertures in the plate, a diaphragm adjacent one face of the plate, said diaphragm having a plurality of cut-away portions in spaced relation about its edge, and'a tube coaxialv withthe diaphragmxand positioned to be vibrated.

7. A horn comprising a rotary motor, a compressor and an au' resonant device comprising a diaphragm chamber, a plate in the diaphragm chamber, a. plurality of apertures in the plate, a diaphragm adjacent one face of the plate, said diaphragm having a plurality of apertures in spaced relation about its edge and a tube having one end adjacent the diaphragm and adapted to be contacted thereby when the diaphragm is vibrated.

In witness whereof We have hereunto set our hands this 30th day of November 1926.

IVILLIAM SPARKS. Y THEODORE JOHNSON SOOFIELD. FRED W. BILLIG.

LLOYD E. JOHNSON. 

